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Table 3 Parameter estimates and associated standard errors (s.e.) and tests of significance for the models given by Eqs. 1, 2 and 3

From: Modelling spiral grain angle variation in New Zealand-grown radiata pine

Parameter

Estimate

s.e.

t-value

p-value

Eq. (1)

    

γ 0

6.708

0.156

42.883

<0.001

γ 1

−0.310

0.003

−121.942

<0.001

Eq. (2)

    

δ 0

8.506

0.161

52.775

<0.001

δ 1

−2.316

0.020

−117.628

<0.001

Eq. (3)

    

ω 0

7.299

0.095

77.009

<0.001

ω 1

−2.357

0.153

−154.468

<0.001

ω 2

−0.059

0.001

-62.263

<0.001